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74F244/74F244B
General description
The 74F244 is an octal buffer that is ideal for driving bus lines of buffer memory address registers. The outputs are all capable of sinking 64mA and sourcing up to 15mA, producing very good capacitive drive characteristics. The device features two output enables, OEa and OEb, each controlling four of the 3-State outputs.
The 74F244B is functionally equivalent to the 74F244. It has been designed to reduce effects of ground noise. Other advantages are noted in the features.
Features
- Octal bus interface
- 3-State output buffer sink 64mA
- 15mA source current
- Guaranteed output skew less than 2.0ns (74F244B)
- Reduced ground bounce (74F244B)
- Reduced ICC (74F244B)
- Reduced loading (74F244B IIL = 40µA)
- Split lead frame offers increased noise immunity (74F244B)
- Industrial temperature range available (-40°C to +85°C) for 74F244
- 74F244 available in SSOP Type II package
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| I74F244D | I74F244D | 9350 330 20602 | Volume production | SOT163-1
(SO20) | Tube (Signetics) | Standard Marking | I74F244D
| week 4, 2004 |
| I74F244D | I74F244D-T | 9350 330 20623 | Volume production | SOT163-1
(SO20) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | I74F244D
| week 4, 2004 |
| I74F244N | I74F244N | 9350 330 30602 | Volume production | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking | I74F244N
| Always Pb-free |
| N74F244BD | N74F244BD | 9350 523 00602 | Volume production | SOT163-1
(SO20) | Tube (Signetics) | Standard Marking | N74F244BD
| week 4, 2004 |
| N74F244BD | N74F244BD-T | 9350 523 00623 | Volume production | SOT163-1
(SO20) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F244BD
| week 4, 2004 |
| N74F244BN | N74F244BN | 9350 523 20602 | Volume production | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking | N74F244BN
| Always Pb-free |
| N74F244D | N74F244D | 9337 395 10602 | Volume production | SOT163-1
(SO20) | Tube (Signetics) | Standard Marking | N74F244D
| week 4, 2004 |
| N74F244D | N74F244D-T | 9337 395 10623 | Volume production | SOT163-1
(SO20) | Reel Pack, SMD, 13" (Signetics) | Standard Marking | N74F244D
| week 4, 2004 |
| N74F244DB | N74F244DB | 9351 860 10112 | Volume production | SOT339-1
(SSOP20) | Tube | Standard Marking | N74F244DB
| week 13, 2005 |
| N74F244DB | N74F244DB-T | 9351 860 10118 | Volume production | SOT339-1
(SSOP20) | Reel Pack, SMD, 13" | Standard Marking | N74F244DB
| week 13, 2005 |
| N74F244N | N74F244N | 9337 113 90602 | Volume production | SOT146-1
(DIP20) | Tube (Signetics) | Standard Marking | N74F244N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| I74F244D | 9350 330 20602 | not available | ||||||
| I74F244D | 9350 330 20623 | Order samples | ||||||
| I74F244N | 9350 330 30602 | Order samples | ||||||
| N74F244BD | 9350 523 00602 | 0.2400 | not available | |||||
| N74F244BD | 9350 523 00623 | 0.2400 | Order samples | |||||
| N74F244BN | 9350 523 20602 | 0.3000 | Order samples | |||||
| N74F244D | 9337 395 10602 | 0.2400 | NA | ARROW ELECTRONICS | 2,008 | 11/21/2008 | Buy online | not available |
| NA | AVNET ELECTRONICS MARKETING | 6,441 | 11/21/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 2,112 | 11/21/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 1,120 | 11/21/2008 | Buy online | ||||
| N74F244D | 9337 395 10623 | 0.2400 | NA | ARROW ELECTRONICS | 2,000 | 11/21/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 6,000 | 11/21/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 6,000 | 11/21/2008 | Buy online | ||||
| NA | DIGI-KEY CORPORATION | 6,095 | 11/21/2008 | Buy online | ||||
| N74F244DB | 9351 860 10112 | 0.2400 | NA | AVNET ELECTRONICS MARKETING | 2,119 | 11/21/2008 | Buy online | not available |
| N74F244DB | 9351 860 10118 | 0.2400 | not available | |||||
| N74F244N | 9337 113 90602 | 0.3000 | NA | AVNET ELECTRONICS MARKETING | 2,503 | 11/21/2008 | Buy online | Order samples |
| NA | DIGI-KEY CORPORATION | 128 | 11/21/2008 | Buy online | ||||
| NA | FUTURE ELECTRONICS- NORTH AMER | 799 | 11/21/2008 | Buy online |
Applications
Related applications
LCD display - discretes focus
PDA - discretes focus
50-60 Hz CRT integrated DTV (TV210D)
Mid-range integrated DTV (TV810)
Intelligent washing machine
Transceiver board
Main CPU board
Technical documents
Application Notes
AN202_1;
Testing and specifying FAST logic (01-Jun-87)
AN203_2;
Test Fixtures for High Speed Logic (02-Apr-98)
AN216_2;
Arbitration in shared resource systems (18-Jul-88)
Parametrics/similar products
| Type number | Package | Description | Propagation Delay(ns) | Voltage | No. of Pins | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|
| I74F244D | SOT163-1
(SO20) | Octal Buffer/Line Driver; Non-Inverting (3-State) | 4.0 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| I74F244N | SOT146-1
(DIP20) | Octal Buffer/Line Driver; Non-Inverting (3-State) | 4.0 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F244BD | SOT163-1
(SO20) | Octal Buffer/Line Driver with Reduced Ground-Noise Effects; Non-Inverting (3-State) | 4.5 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F244BN | SOT146-1
(DIP20) | Octal Buffer/Line Driver with Reduced Ground-Noise Effects; Non-Inverting (3-State) | 4.5 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F244D | SOT163-1
(SO20) | Octal Buffer/Line Driver; Non-Inverting (3-State) | 4.0 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F244DB | SOT339-1
(SSOP20) | Octal Buffer/Line Driver; Non-Inverting (3-State) | 4.0 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
| N74F244N | SOT146-1
(DIP20) | Octal Buffer/Line Driver; Non-Inverting (3-State) | 4.0 | 4.5-5.5 V | 20 | TTL | -15/+64 mA |
Similar products
74F244/74F244B links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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